Dynamic characteristics, Figure 4, Tda8946j – Philips TDA8946J User Manual
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Philips Semiconductors
TDA8946J
2 x 15 W stereo BTL audio amplifier
Product specification
Rev. 02 — 14 March 2000
8 of 23
9397 750 06863
© Philips Electronics N.V. 2000. All rights reserved.
12. Dynamic characteristics
[1]
The noise output voltage is measured at the output in a frequency range from 20 Hz to 20 kHz (unweighted), with a source impedance
R
S
= 0
Ω
at the input.
[2]
Supply voltage ripple rejection is measured at the output, with a source impedance R
S
= 0
Ω
at the input. The ripple voltage is a sine
wave with a frequency f
ripple
and an amplitude of 700 mV (RMS), which is applied to the positive supply rail.
[3]
Output voltage in mute mode is measured with an input voltage of 1 V (RMS) in a bandwidth of 20 kHz, so including noise.
Fig 3.
Quiescent supply current as function of supply
voltage.
Fig 4.
Quiescent supply current as function of mode
voltage.
handbook, halfpage
50
40
30
20
10
0
0
4
8
12
16
VCC (V)
Iq
(mA)
20
MGU005
handbook, halfpage
50
40
30
20
10
0
0
4
8
12
16
VMODE (V)
Iq
(mA)
20
MGU006
VCC = 18 V
12 V
Table 8:
Dynamic characteristics
V
CC
= 18 V; T
amb
= 25
°
C; R
L
= 8
Ω
; f = 1 kHz; V
MODE
= 0 V; measured in test circuit
22 Hz to 22 kHz; unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
P
o
output power
THD = 10%
13
15
-
W
THD = 0.5%
10
11.5
-
W
THD
total harmonic distortion
P
o
= 1 W
-
0.03
0.1
%
G
v
voltage gain
31
32
33
dB
Z
i(dif)
differential input impedance
70
90
110
k
Ω
V
n(o)
noise output voltage
-
90
120
µ
V
SVRR
supply voltage ripple rejection
f
ripple
= 1 kHz
50
65
-
dB
f
ripple
= 100 Hz
to 20 kHz
-
60
-
dB
V
o(mute)
output voltage
mute mode
-
-
50
µ
V
α
cs
channel separation
R
S
= 0
Ω
50
75
-
dB